CN114833044B - Automatic production device for high-heat-conductivity flocking pad - Google Patents
Automatic production device for high-heat-conductivity flocking pad Download PDFInfo
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- CN114833044B CN114833044B CN202210456082.5A CN202210456082A CN114833044B CN 114833044 B CN114833044 B CN 114833044B CN 202210456082 A CN202210456082 A CN 202210456082A CN 114833044 B CN114833044 B CN 114833044B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 53
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000001802 infusion Methods 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 230000010412 perfusion Effects 0.000 claims description 2
- 230000005684 electric field Effects 0.000 abstract description 9
- 238000011049 filling Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 16
- 239000004917 carbon fiber Substances 0.000 description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002041 carbon nanotube Substances 0.000 description 5
- 229910021393 carbon nanotube Inorganic materials 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 244000144992 flock Species 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/001—Flocking
- B05C19/002—Electrostatic flocking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C15/00—Enclosures for apparatus; Booths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/06—Storage, supply or control of the application of particulate material; Recovery of excess particulate material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Coating Apparatus (AREA)
Abstract
The invention mainly relates to the field of automatic production, and particularly discloses an automatic production device for a high-heat-conductivity flocking pad. The device comprises a conveyor belt system, a velvet cutting component, an electrostatic flocking component, a filling device and a drying device, wherein the electrostatic flocking component is connected with a power supply for outputting a stepped electric field through a bottom screen. Carrying the substrate by a conveyor belt system, and finally obtaining the finished product of the high-heat-conductivity flocked mat through stretching, step electric field flocking, shrinking, pouring and drying. According to the invention, the stretching, shrinking and compacting of the flocking substrate are carried out by regulating and controlling the matching speed of the conveying system, a step electric field is provided in the flocking link, and the flocking, filling and drying time is regulated and controlled, so that the problems of discontinuous equipment, low flocking density, uneven fiber length and the like of the conventional flocking heat-conducting pad production equipment can be effectively solved while the high density, high vertical heat conductivity and excellent mechanical property of the heat-conducting pad are ensured, and the flocking heat-conducting pad has a wide application prospect in the field of thermal interface materials.
Description
Technical Field
The invention relates to the field of automatic production, in particular to an automatic production device for a high-heat-conductivity flocking cushion.
Background
With the rapid development of the field of electronic integrated circuits, there is an increasing demand for thermal management materials (TIMs), and the high thermal conductive flocking pad has both good flexibility and excellent vertical thermal conductivity, and can be cut into any shape according to the needs, so that more and more attention is paid to people. It is often necessary to add thermally conductive fillers with high thermal conductivity, including alumina, zinc oxide, boron nitride, silicon nitride, graphene, carbon fibers, etc., to the polymer in order to obtain TIMs with superior properties.
However, in the existing TIMs, the heat-conducting fillers are often doped in the polymer matrix in a random blending manner, but due to the random distribution of the heat-conducting fillers in the matrix, effective dispersion and formation of a heat-conducting path are difficult to form, so that a large amount of heat-conducting fillers are often required to be added, and the improvement on the heat-conducting performance of the whole material is limited.
At present, some researches attempt to perform induced orientation alignment on materials with large length-diameter ratio such as carbon fiber. Usually, the forces of extrusion, static electricity, magnetic field, etc. are applied to two sides of the blended material block, so that the carbon nanotubes in disordered distribution are aligned again under the action of the applied field, but because the viscosity resistance of the matrix is too large, the proportion of the aligned carbon nanotubes obtained by the method is very limited in practice, and the energy consumption is huge, thus increasing the cost burden. There is also an attempt to directly grow the carbon nanotubes in an oriented manner by a CVD method and then combine the carbon nanotubes with the matrix material under the oriented condition, but this method has high requirements on the growth method and manufacturing cost of the carbon nanotubes, and is difficult to meet the requirements of industrial mass production.
So combine the preparation technology of the high perpendicular thermal conductive heat conduction pad of high density high orientation, designed an automated production device, not only can satisfy the production demand of serialization large batch, still improve on the basis through the static flocking technique that combines the technology ripe, can solve some problems of current static flocking, for example: the flocking density is lower, the flocking product is irregular, the degree of orientation is low, etc.
Disclosure of Invention
The invention aims to provide an automatic production device of a high-heat-conductivity flocked mat, which has the advantages of high flocking density, automatic production and the like and can effectively solve the problems of the background art aiming at the defects of the prior art.
The invention provides an automatic production device of a high-heat-conductivity flocking cushion, which comprises:
a transport system for carrying the substrates, wherein the transport system,
an electrostatic flocking assembly for flocking a substrate with a flock,
an infusion device for infusing a substrate onto said flocked substrate,
a drying device, drying the poured substrate,
the conveying system at least comprises a first conveying belt, a second conveying belt and a third conveying belt; the electrostatic flocking assembly is positioned above the second conveyor belt, and the filling equipment and the drying equipment are positioned above the third conveyor belt; the substrate is conveyed to the second conveyor belt through the first conveyor belt, the substrate is conveyed to the third conveyor belt to be subjected to resin infusion and drying after flocking is carried out on the substrate in sequence on the second conveyor belt, and the rotating speeds of the first conveyor belt and the third conveyor belt are both smaller than the rotating speed of the second conveyor belt.
Furthermore, the electrostatic flocking component comprises a flocking box, a high-voltage power supply and a grounding polar plate, wherein the flocking box is used for accommodating short fibers and is provided with a conductive screen mesh bottom surface, the output voltage of the high-voltage power supply is gradually increased gradient voltage, and the positive electrode output end of the high-voltage power supply is connected with the conductive screen mesh bottom surface; the bottom surface of the screen and the grounding polar plate are respectively positioned at two sides of the conveyor belt.
Further, still including cutting the fine hair subassembly, cut the fine hair subassembly and include cutting blade, fibre reel, carry over pinch rolls, vibration delivery board, the fibre warp on the fibre reel the carry over pinch rolls pulls to cutting area, forms the short fiber after the cutting blade cutting, will input the flocking case to electrostatic flocking subassembly after the short fiber cutting.
Further, the cut short fibers are conveyed to the flocking box through a vibration conveying plate after being subjected to vibration dispersion; the head end is located cutting blade below, the tail end is located flocking case top, and from the head end to the downward 30 slope of tail end.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) The flocking rubber bottom is subjected to stretching-shrinking process by matching the conveying system with the conveying belts with different rotating speeds, so that the flocking density of the fiber flock can be effectively improved, and the vertical heat conductivity of the heat conducting pad is further improved.
(2) This automated production device of high heat conduction flocking pad can realize the function of flocking, filling, stoving through each item subassembly is mutually supported to realize the stable output of high heat conduction flocking pad quality, output.
(3) Through setting up the vibration conveying board, effective dispersion fibre prevents the fibre reunion, the follow-up flocking of being convenient for to it is high to obtain flocking density, and the fibre orientation degree is good, and then possesses high perpendicular thermal conductivity's heat conduction pad.
(4) Through the flocking subassembly that sets up, in arranging electrostatic flocking equipment in flocking case wholly, can effectively prevent the entering of a large amount of dust impurities behind the long-term operation, play the wet guard action of dustproof accuse temperature accuse to the spare part.
(5) Gradient voltage is input through a power supply, gradient electrostatic flocking based on an electric field can be achieved, and flocking density is effectively increased.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an automatic production device for a high-thermal-conductivity flocking cushion;
FIG. 2 is a schematic view of the principle and effect of electrostatic flocking;
FIG. 3 is SEM images of vertically oriented carbon fiber staple arrays prepared by different processes.
In FIG. 1:1. a velvet cutting assembly; 101. a cutting blade; 102. a fiber reel; 103. a traction roller; 104 an auxiliary locator; 105 vibrating the conveying plate; 2. a transmission system: 201. a first conveyor belt; 202. a second conveyor belt; 203. a third conveyor belt; 3. a flocking assembly; 301. flocking boxes; 302. a high voltage power supply; 303. a ground plate; 4. A perfusion apparatus; 5. and (7) drying equipment.
Belt speed ratio a in FIG. 3 1 : a 2 : a 3 1 and applying a direct high pressure; b ratio of belt speed to belt speed a 1 : a 2 : a 3 3 and applying a direct high pressure; c ratio of conveyor speed to a 1 : a 2 : a 3 3 and applying a step voltage.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
As shown in fig. 1, the present invention provides 1 an automatic production apparatus for a high thermal conductive flocking cushion, comprising:
a transport system 2 for carrying the substrates,
an electrostatic flocking assembly 3 for flocking the substrate,
an infusion device 4 for infusing a substrate onto said flocked substrate,
a drying device 5, drying the poured substrate,
the conveying system 2 at least comprises a first conveyor belt 201, a second conveyor belt 202 and a third conveyor belt 203; the electrostatic flocking component 3 is positioned above the second conveyor belt 202, and the pouring device 4 and the drying device 5 are positioned above the third conveyor belt 203; the first conveyor belt 201 conveys the substrate to the second conveyor belt 202, the substrate is conveyed to the third conveyor belt 203 for resin infusion and drying after flocking is sequentially carried out on the second conveyor belt 202, and the rotating speed of the first conveyor belt 201 and the rotating speed of the third conveyor belt 203 are both smaller than that of the second conveyor belt 202.
A stretchable adhesive substrate of a desired size is stuck to the first conveyor 201, transferred to the second conveyor 202, and the rotation speed of the second conveyor 202 is set to be greater than that of the first conveyor so that the substrate is stretched while being transferred from the first conveyor to the second conveyor, and the stretched substrate is maintained in a stretched state, and then electrostatically flocked by the flocking assembly 3. And then conveyed to the third conveyor belt 203, the rotation speed of the third conveyor belt 203 is set to be lower than that of the second conveyor belt 202, so that the substrates are contracted when conveyed from the second conveyor belt 202 to the third conveyor belt 203, the flocked short fibers are densely arranged, the resin is poured through the pouring device 4, and then the resin is cured and molded through the drying device 5.
Further, the stretch ratio of the stretchable substrate is controlled by the speed ratio of the first conveyor 201 to the second conveyor 202 in the conveying system 2. The flocking time of the electrostatic flocking of the short fibers is regulated by the speed of the second conveyor belt 202. The drying time in the drying apparatus is regulated by the speed of the third conveyor belt 203.
In the figure, the electrostatic flocking component 3 comprises a flocking tank 301, a high-voltage power supply 302 and a grounding polar plate 303, wherein the flocking tank 301 is used for accommodating short fibers and is provided with a conductive screen bottom surface, the output voltage of the high-voltage power supply 302 is a gradually-increased gradient voltage, and the positive output end of the high-voltage power supply is connected with the conductive screen bottom surface; the bottom surface of the screen and the grounding polar plate 303 are respectively positioned at two sides of the conveyor belt. The conductive screen will create a high voltage electric field with the grounded substrate 303 to polarize and vertically insert the staple fibers into the flock on the tensile substrate.
In the figure, the automatic production device also comprises a velvet cutting assembly 1, wherein the velvet cutting assembly 1 comprises a cutting blade 101, a fiber reel 102, a drawing roller 103, an auxiliary positioner 104 and a vibrating conveying plate 105. The fiber reel 102 is positioned at one side of the cutting blade 101, and the fiber on the fiber reel 102 is drawn to a cutting area through the drawing roller 103 and is cut by the cutting blade 101 to form short fiber; the chopped fibers are input into the electrostatic flocking box 301 in the electrostatic flocking component 3 for standby after being vibrated and dispersed by the vibrating conveying plate 105 after being cut.
In the figure, the plastic sleeve of the auxiliary positioner 104 is sized to match the fiber bundle and is fixed, which can be used to prevent the fibers from wobbling during the cutting process to prevent fiber size unevenness.
In the figure, the filling device 4 adopts addition type silica gel, and the prepared short fiber array is filled after the components A and B are respectively stirred and mixed uniformly.
In the figure, a plurality of substrates are placed on a first conveyor belt to realize the continuous preparation of the high-heat-conductivity flocking pad. In consideration of the problems of stretching ratio and the like, the distance between two adjacent substrates needs to be reasonably designed. Setting the first belt speed (a) 1 ) And a second conveyor belt (a) 2 ) Is in accordance with the set substrate stretch ratio, and the rotational speed (a) of the third conveyor belt 3 ) Less than or equal to the first belt rotation speed (a) 1 ). Specific rotational speed (a) of the second conveyor belt 2 ) Determined by the flocking time of the planted fiber. Specific rotational speed (a) of the third conveyor belt 3 ) Determined by the drying time of the poured polymer matrix. The substrate pitch (d) and the substrate edge length (l) on the first conveyor belt need to satisfy the following relation:
preferably, the cut staple fibers are conveyed to the flocking box 301 by a vibrating conveyor 105; the head end is located below the cutting blade 101, the tail end is located above the flocking tank 301, and is inclined downward by 30 ° from the head end to the tail end. Through setting up the vibration delivery board, effective dispersion fibre prevents the fibre reunion, the follow-up flocking of being convenient for to it is high to obtain flocking density, and the fibre orientation degree is good, and then possesses the heat conduction pad of high vertical thermal conductivity (22.59W/mK).
The following thermal pad was prepared using the apparatus described in fig. 1:
example 1
Opening the apparatus with a predetermined front to back stretch ratio of 1:1.5, setting the rotating speed ratio of the first, second and third conveyor belts as a 1 : a 2 : a 3 4 2 Is placed at the beginning of the first conveyor belt 201 at an interval d of 3.5 cm, and is transported to the end and then conveyed to the second conveyor belt 202. Meanwhile, carbon fibers with the diameter of 5 microns are drawn by a drawing roller 103 from a fiber winding drum 102 through an auxiliary positioner 104 and along with the operation of a cutting machine 101, the carbon fibers are cut into short fibers with the uniform length of 1 mm, the short fibers enter the electrostatic flocking device 3 after being vibrated and dispersed by a vibrating conveying plate, and a high-voltage power supply 302 is arranged to directly apply 20 kV positive electrode output and is connected with the bottom surface of the conductive screen. The elastic acrylic substrate is stretched through the transmission speed difference of the first conveyor belt 201 and the second conveyor belt 202, and then is conveyed to the upper end of the grounding polar plate 303 through the second conveyor belt 202, the flocking principle is shown in figure 2, the carbon fiber short fibers are polarized and charged when passing through a high potential difference zone formed by a bottom screen and the grounding polar plate 303 in the flocking box 301, the elastic acrylic substrate inserted into the upper end of the second conveyor belt 202 is vertically accelerated, and are flocked to the maximum flocking density when passing through the high potential difference zone along with the second conveyor belt 202, so that a vertically oriented carbon fiber short fiber array is prepared, and the SEM image of the vertically oriented carbon fiber short fiber array is shown in figure 3B. The prepared carbon fiber short fiber array is continuously conveyed to a third conveyor belt 203 along with a second conveyor belt 202 and is collected through the rotation speed differenceAnd (4) shrinking. And then, in a filling device 4, fully and uniformly mixing the addition type silica gel component A and the component B according to a ratio of 1.
Comparative example 1
The only difference compared to example 1 is that in step 1, after opening the apparatus, the predetermined front to back stretch ratio is 1:1, setting the rotation speed ratio of the first, second and third conveyor belts as a 1 : a 2 : a 3 SEM images of the vertically-oriented carbon fiber short fiber arrays prepared in the following manner 1.
Example 2
Starting the equipment, and setting the pre-and post-stretching ratio to be 1:1.5, setting the rotating speed ratio of the first, second and third conveyor belts as a 1 : a 2 : a 3 4 2 Is placed at the beginning of the first conveyor belt 201 at an interval d of 3.5 cm, and is transported to the end and then conveyed to the second conveyor belt 202. Meanwhile, carbon fibers with the diameter of 5 microns are drawn by the drawing roller 103 from the fiber winding drum 102 through the auxiliary positioner 104 and along with the operation of the cutting machine 101, the carbon fibers are cut into short fibers with the uniform length of 1 mm, the short fibers are vibrated and dispersed by the vibrating conveying plate and then enter the electrostatic flocking device 3, the high-voltage power supply 302 is used for applying step voltage to positive electrode output, and the positive electrode output is connected with the bottom surface of the conductive screen. The step electric field is applied in the following steps, firstly, the electric field is applied for 5 kV, the electric field is raised to 10 kV after 5 s of flocking, and the electric field is raised to 20 kV after 5 s of flocking again for flocking. The elastic acrylic substrate is stretched through the transmission speed difference of the first conveyor belt 201 and the second conveyor belt 202, and then is conveyed to the upper end of the grounding polar plate 303 through the second conveyor belt 202, the carbon fiber short fibers are polarized and charged when passing through a high potential difference zone formed by a bottom screen and the grounding polar plate 303 in the flocking box 301, the elastic acrylic substrate inserted into the upper end of the second conveyor belt 202 is vertically accelerated, and is flocked to the maximum flocking density when passing through the high potential difference zone along with the second conveyor belt 202, so that a vertically oriented carbon fiber short fiber array is prepared, and an SEM image of the vertically oriented carbon fiber short fiber array is shown in figure 3C. The prepared carbon fiber short fiber array is conveyed to the second conveyor belt 202On the third conveyor belt 203 and is contracted by the difference in the rotational speed. And then, in a filling device 4, fully and uniformly mixing the addition type silica gel component A and the component B according to a ratio of 1.
The thermal conductivity of the thermal conductive gaskets obtained in examples 1 and 2 and comparative example 1 was measured in accordance with ASTM-D5470.
Table 1: data table of thermal conductivity of thermal pads prepared in examples 1 and 2 and comparative example 1
| Thermal conductivity coefficient/(W/mK) | |
| Example 1 | 14.08 |
| Example 2 | 22.59 |
| Comparative example 1 | 10.61 |
By combining the data shown in the attached figure 3 and the data shown in the table 1, the heat conductivity of the final finished heat-conducting gasket can be effectively improved by regulating the matching speed of the conveying system to stretch and shrink the flocking substrate compactly and control the high-voltage power supply to output step voltage, and the heat-conducting gasket has a good application prospect.
Claims (5)
1. The utility model provides a high heat conduction flocking pad's automated production device which characterized in that includes:
a transport system (2) for carrying the substrates,
an electrostatic flocking assembly (3) for flocking said substrate,
an infusion device (4) for infusing a substrate onto the flocked substrate,
a drying device (5), wherein the drying device (5) dries the poured substrate,
the conveying system (2) comprises at least a first conveyor belt (201), a second conveyor belt (202) and a third conveyor belt (203); the electrostatic flocking assembly (3) is positioned above the second conveyor belt (202), and the perfusion apparatus (4) and the drying apparatus (5) are positioned above the third conveyor belt (203); the substrate flocking machine is characterized in that the first conveyor belt (201) conveys a substrate to the second conveyor belt (202), the substrate is conveyed to the third conveyor belt (203) for resin infusion and drying after flocking is carried out on the second conveyor belt (202), and the rotating speeds of the first conveyor belt (201) and the third conveyor belt (203) are both smaller than that of the second conveyor belt (202).
2. The production device according to claim 1, wherein the electrostatic flocking assembly (3) comprises a flocking tank (301), a high voltage power supply (302), and a ground plate (303), the flocking tank (301) is used for accommodating short fibers and has a conductive mesh bottom surface, and a positive output end of the high voltage power supply (302) is connected with the conductive mesh bottom surface; the bottom surface of the screen and the grounding polar plate (303) are respectively positioned at two sides of the second conveyor belt (202).
3. The production device according to claim 2, further comprising a fluff cutting assembly (1), wherein the fluff cutting assembly (1) comprises a cutting blade (101), a fiber reel (102), a drawing roller (103) and a vibrating conveying plate (105), the fibers on the fiber reel (102) are drawn to a cutting area through the drawing roller (103), and are cut by the cutting blade (101) to form short fibers; and the chopped fibers are input into a flocking box (301) of the electrostatic flocking component (3) after being vibrated and dispersed by a vibration conveying plate (105) after being cut.
4. A production device as claimed in claim 3, characterized in that the vibrating conveyor plate (105) has a head end below the cutting blade (101) and a tail end above the flocking tank (301) and is inclined downwards by 30 ° from the head end to the tail end.
5. A production arrangement according to any of the claims 2-4, characterized in that the output voltage of the high voltage power supply (302) is a gradually increasing gradient voltage.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210456082.5A CN114833044B (en) | 2022-04-24 | 2022-04-24 | Automatic production device for high-heat-conductivity flocking pad |
| JP2023062663A JP7521841B2 (en) | 2022-04-24 | 2023-04-07 | Automated production equipment for high thermal conductive flocked pads |
| US18/138,138 US20230338985A1 (en) | 2022-04-24 | 2023-04-24 | Automatic production apparatus for high-thermal-conductivity flocking pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210456082.5A CN114833044B (en) | 2022-04-24 | 2022-04-24 | Automatic production device for high-heat-conductivity flocking pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114833044A CN114833044A (en) | 2022-08-02 |
| CN114833044B true CN114833044B (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210456082.5A Active CN114833044B (en) | 2022-04-24 | 2022-04-24 | Automatic production device for high-heat-conductivity flocking pad |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20230338985A1 (en) |
| JP (1) | JP7521841B2 (en) |
| CN (1) | CN114833044B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100815A (en) * | 1985-04-01 | 1987-01-24 | 尤尼罗易尔纺织工程公司 | Method and device for electrostatic flocking of thread-like or yarn-like material to generate electrostatic field and yarn or wool produced thereby |
| EP0420256A2 (en) * | 1989-09-29 | 1991-04-03 | Kimberly-Clark Corporation | Increased pile density composite elastic material |
| CN103521405A (en) * | 2013-09-27 | 2014-01-22 | 嘉善亿鑫植绒有限公司 | Mechanical flocking plant |
| CN105679555A (en) * | 2016-01-12 | 2016-06-15 | 东华大学 | Preparation method for three-dimensional aminated carbon nanotube array/stretchable textile fiber electrode material |
| CN207219264U (en) * | 2017-08-15 | 2018-04-10 | 深圳市鸿富诚屏蔽材料有限公司 | Anisotropy insulating heat-conductive pad |
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| CN114833044A (en) | 2022-08-02 |
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